1, rear projection mosaic wall
DLP technology principle is very simple, set up a projector inside the rear unit, issued after the image is projected onto the back of the lens magnifies the screen through the lens reflex, that projection. DLP mosaic wall itself wide classification, the various terms after another, but summed up, its prominent feature is the large unit size, technology is relatively mature, the seam less; its main drawback bulky, short life, the picture quality is not high .
2, plasma walls
PDP plasma display as the home for the moving image, due to the early use of high brightness, high contrast, high color gamut, wide viewing angle and other characteristics by many users, but is applied to the field of security, or takes a long time to display a still image or when the graphic, for example, to make the TV monitor or spliced into walls, there is a serious flaw: display a static image blur even prone to burn-in, the so-called plasma brand, brightness decay rapidly, once the mark appear or after the brightness down can not be restored; low reliability, high power consumption compared to other technologies. 42 "screen listing (its border interval of about 5mm), but the price is more expensive. In the current level of technology, can not overcome the disadvantages of PDP severely hindered its commercial large-screen display applications Currently, there are specialized markets for splicing .